package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

/**
 * @Author
 * @Date 2024/5/7 13:04
 * @Description:
 */
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {
     public static final String OPENID_GET="https://api.weixin.qq.com/sns/jscode2session";

    @Autowired
    WeChatProperties weChatProperties;

    @Autowired
    UserMapper userMapper;

    @Override
    public User wxlogin(UserLoginDTO userLoginDTO) {
        String openid=getopenid(userLoginDTO.getCode());
        //判断openid是否为空
        if (openid==null){
            throw new  LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //判断是否为新用户
        User user = userMapper.selectOne(new LambdaQueryWrapper<User>().eq(User::getOpenid, openid));
        if(user == null){
            //新用户
            user=User.builder()
                .createTime(LocalDateTime.now())
                . openid(openid)
                .build();
            userMapper.insert(user);
        }
        return user;
    }
    private String getopenid(String code) {
        //获取openid
        Map<String,String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid() );
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");

        String json= HttpClientUtil.doGet(OPENID_GET,map);

        JSONObject jsonObject = JSON.parseObject(json);
        String openid= (String) jsonObject.get("openid");

        return openid;
    }
}
